Artist Doug Aitken transforms midtown Manhattan with seven monumental projections on the exterior facades of The Museum of Modern Art. Actors Donald Sutherland and Tilda Swinton, musicians Seu Jorge and Cat Power, and actor/street drummer Ryan Donowho star in the interlocking vignettes, visible from the street. sleepwalkers leads viewers on a journey through the city fabric, from an abandoned subway tunnel to the neon lights of Times Square. January 16-February 12 Nightly 5-10 p.m. Free